The Collaborative International Dictionary of English v.0.48:

Honeycombed \Hon"ey*combed`\, a.
   Formed or perforated like a honeycomb.
   [1913 Webster]

         Each bastion was honeycombed with casements. --Motley.
   [1913 Webster] honeycreeper

WordNet (r) 3.0 (2006):

honeycombed
    adj 1: pitted with cell-like cavities (as a honeycomb) [syn:
           alveolate, faveolate, cavitied, honeycombed,
           pitted]

Moby Thesaurus II by Grady Ward, 1.0:

31 Moby Thesaurus words for "honeycombed":
   alveolar, alveolate, apertured, crawling, creeping, crible, dented,
   depressed, dimpled, engraved, faveolate, fenestrated, holey,
   indented, like Swiss cheese, notched, peppered, perforate,
   perforated, permeated, pierced, pitted, pocked, pockmarked,
   riddled, saturated, shot through, slotted, swarming, teeming,
   windowed